腹外疝最常见的内容物是（）
A.大网膜
B.小肠
C.盲肠
D.乙状结肠
E.膀胱
参考答案：B
I am too busy to listen to her _____ talking. She has kept talking for about two hours. [ ]
A. hopeless
B. endless
C. harmless
D. careless
